Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon
It is typically difficult for engineers to detect the tension force of prestressed tendons in concrete structures. In this study, a smart bar is fabricated by embedding a Fiber Bragg Grating (FBG) in conjunction with its communication fiber into a composite bar surrounded by carbon fibers. Subsequen...
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| Format: | Article |
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MDPI AG
2018-10-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/11/11/2087 |
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| author | Danhui Dan Pengfei Jia Guoqiang Li Po Niu |
| author_facet | Danhui Dan Pengfei Jia Guoqiang Li Po Niu |
| author_sort | Danhui Dan |
| collection | DOAJ |
| description | It is typically difficult for engineers to detect the tension force of prestressed tendons in concrete structures. In this study, a smart bar is fabricated by embedding a Fiber Bragg Grating (FBG) in conjunction with its communication fiber into a composite bar surrounded by carbon fibers. Subsequently, a smart composite cable is twisted by using six outer steel wires and the smart bar. Given the embedded FBG, the proposed composite cable simultaneously provides two functions, namely withstanding tension force and self-sensing the stress state. It can be potentially used as an alternative to a prestressing reinforcement tendon for prestressed concrete (PC), and thereby provide a solution to detecting the stress state of the prestressing reinforcement tendons during construction and operation. In the study, both the mechanical properties and sensing performance of the proposed composite cable are investigated by experimental studies under different force standing conditions. These conditions are similar to those of ordinary prestressed tendons of a real PC components in service or in a construction stage. The results indicate that the proposed smart composite cable under the action of ultra-high pretension stress exhibits reliable mechanical performance and sensing performance, and can be used as a prestressed tendon in prestressed concrete structures. |
| first_indexed | 2024-04-13T06:49:03Z |
| format | Article |
| id | doaj.art-0936849e51ce4e05a5b2063a6b499e27 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T06:49:03Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-0936849e51ce4e05a5b2063a6b499e272022-12-22T02:57:28ZengMDPI AGMaterials1996-19442018-10-011111208710.3390/ma11112087ma11112087Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed TendonDanhui Dan0Pengfei Jia1Guoqiang Li2Po Niu3Key Laboratory of Performance Evolution and Control for Engineering Structures of Ministry of Education, Tongji University, Shanghai 200092, ChinaDepartment of Bridge Engineering, Tongji University, Shanghai 200092, ChinaChina Railway Engineering Consulting Group Co., Ltd., Beijing 100055, ChinaZhenshixing Technology Co., Ltd., Tianjin 300384, ChinaIt is typically difficult for engineers to detect the tension force of prestressed tendons in concrete structures. In this study, a smart bar is fabricated by embedding a Fiber Bragg Grating (FBG) in conjunction with its communication fiber into a composite bar surrounded by carbon fibers. Subsequently, a smart composite cable is twisted by using six outer steel wires and the smart bar. Given the embedded FBG, the proposed composite cable simultaneously provides two functions, namely withstanding tension force and self-sensing the stress state. It can be potentially used as an alternative to a prestressing reinforcement tendon for prestressed concrete (PC), and thereby provide a solution to detecting the stress state of the prestressing reinforcement tendons during construction and operation. In the study, both the mechanical properties and sensing performance of the proposed composite cable are investigated by experimental studies under different force standing conditions. These conditions are similar to those of ordinary prestressed tendons of a real PC components in service or in a construction stage. The results indicate that the proposed smart composite cable under the action of ultra-high pretension stress exhibits reliable mechanical performance and sensing performance, and can be used as a prestressed tendon in prestressed concrete structures.https://www.mdpi.com/1996-1944/11/11/2087carbon fiber barFiber Bragg Gratingstrain sensorsmart composite prestressed tendonexperimental study |
| spellingShingle | Danhui Dan Pengfei Jia Guoqiang Li Po Niu Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon Materials carbon fiber bar Fiber Bragg Grating strain sensor smart composite prestressed tendon experimental study |
| title | Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon |
| title_full | Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon |
| title_fullStr | Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon |
| title_full_unstemmed | Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon |
| title_short | Experimental Study on Mechanical and Sensing Properties of Smart Composite Prestressed Tendon |
| title_sort | experimental study on mechanical and sensing properties of smart composite prestressed tendon |
| topic | carbon fiber bar Fiber Bragg Grating strain sensor smart composite prestressed tendon experimental study |
| url | https://www.mdpi.com/1996-1944/11/11/2087 |
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